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Date: Mon, 20 Apr 2026 16:45:12 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Albert Esteve <aesteve@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Brendan Higgins <brendan.higgins@linux.dev>,
	David Gow <david@davidgow.net>, Rae Moar <raemoar63@gmail.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
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	linux-doc@vger.kernel.org,
	Alessandro Carminati <acarmina@redhat.com>,
	Guenter Roeck <linux@roeck-us.net>, Kees Cook <kees@kernel.org>
Subject: Re: [PATCH v7 1/5] bug/kunit: Core support for suppressing warning
 backtraces
Message-ID: <20260420144512.GL3102624@noisy.programming.kicks-ass.net>
References: <20260420-kunit_add_support-v7-0-e8bc6e0f70de@redhat.com>
 <20260420-kunit_add_support-v7-1-e8bc6e0f70de@redhat.com>
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In-Reply-To: <20260420-kunit_add_support-v7-1-e8bc6e0f70de@redhat.com>

On Mon, Apr 20, 2026 at 02:28:03PM +0200, Albert Esteve wrote:
> +bool __kunit_is_suppressed_warning(void)
> +{
> +	struct __suppressed_warning *warning;
> +
> +	rcu_read_lock();

	guard(rcu)();

> +	list_for_each_entry_rcu(warning, &suppressed_warnings, node) {
> +		if (warning->task == current) {
> +			warning->counter++;
> +			rcu_read_unlock();
> +			return true;
> +		}
> +	}
> +	rcu_read_unlock();
> +
> +	return false;
> +}
> +
> +#endif /* CONFIG_KUNIT_SUPPRESS_BACKTRACE */
> 
> -- 
> 2.52.0
>